Guntersville
Hydro power plant in Marshall County, Alabama. 115.2 MW of nameplate capacity across 4 generators, operated by Tennessee Valley Authority.
Also known as Guntersville Dam · EIA plant 48
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 115.2 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- August 1939First generator online
- Operator
- Tennessee Valley AuthorityEIA operator ID 18642
- Grid
- TVABalancing authority TVA
- Price nodes
- None linkedNo verified ISO node
- Location
- Marshall County, AL34.4213, −86.3939
- EIA plant ID
- 48EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Guntersville produces
Free · EIA-923Net generation, 2025
509 GWh
509,111 MWh, final
Capacity factor, 2025
50.4%
2024: 44.9%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
453.4–941.0
GWh a year. Low 2023, high 2020
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 533,772 | Not reported | 12 of 12 |
| 2001 | 558,156 | Not reported | 12 of 12 |
| 2002 | 595,251 | Not reported | 12 of 12 |
| 2003 | 821,942 | Not reported | 12 of 12 |
| 2004 | 655,429 | Not reported | 12 of 12 |
| 2005 | 682,602 | Not reported | 12 of 12 |
| 2006 | 612,670 | Not reported | 12 of 12 |
| 2007 | 414,140 | Not reported | 12 of 12 |
| 2008 | 505,117 | Not reported | 12 of 12 |
| 2009 | 771,757 | Not reported | 12 of 12 |
| 2010 | 645,316 | 63.9% | 12 of 12 |
| 2011 | 721,985 | 71.5% | 12 of 12 |
| 2012 | 666,461 | 65.9% | 12 of 12 |
| 2013 | 839,939 | 83.2% | 12 of 12 |
| 2014 | 713,367 | 70.7% | 12 of 12 |
| 2015 | 740,864 | 73.4% | 12 of 12 |
| 2016 | 506,256 | 50.0% | 12 of 12 |
| 2017 | 724,522 | 71.8% | 12 of 12 |
| 2018 | 733,655 | 72.7% | 12 of 12 |
| 2019 | 667,523 | 66.1% | 12 of 12 |
| 2020 | 940,999 | 93.0% | 12 of 12 |
| 2021 | 599,319 | 59.4% | 12 of 12 |
| 2022 | 560,724 | 55.6% | 12 of 12 |
| 2023 | 453,373 | 44.9% | 12 of 12 |
| 2024 | 454,790 | 44.9% | 12 of 12 |
| 2025 | 509,111 | 50.4% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Conventional Hydroelectric | 28.8 | August 1939 |
| 2 | Conventional Hydroelectric | 28.8 | October 1939 |
| 3 | Conventional Hydroelectric | 28.8 | December 1939 |
| 4 | Conventional Hydroelectric | 28.8 | March 1952 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Tennessee Valley Authority as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Guntersville
More plants operated by Tennessee Valley Authority
Questions about Guntersville
How much power does Guntersville produce?
Guntersville reported 509,111 MWh (509 GWh) of net generation in 2025, a 50.4% capacity factor on 115.2 MW of nameplate capacity.
Where is Guntersville?
Guntersville is in Marshall County, Alabama, at 34.4213, −86.3939. It is in the Tennessee Valley Authority balancing area (TVA).
Who operates Guntersville?
EIA-860M for August 2026 lists Tennessee Valley Authority as the operator (EIA operator ID 18642). The operator is not always the owner.
When did Guntersville start operating?
Its first generator began operating in August 1939, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page